Auto Light Energy Saver Kit: Build Your Own Occupancy Detector with Arduino Uno & PIR Sensor

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Walk into a room and the lights turn on automatically, then off when you leave — that’s the magic of occupancy-based energy saving, and you’ll build it hands-on. Using a PIR motion sensor inside and a reed switch on the door, this kit creates a miniature system that accurately displays whether a room is occupied or free, just like real smart homes.

What You'll Build

You’ll wire up a breadboard circuit that reads two sensors simultaneously: the HC-SR501 detects movement, while the reed switch tells if the door is open or closed. A green LED indicates the room is free; a red LED lights up when someone enters and stays inside. It’s a working prototype of an auto light saver, scaled down so you can experiment with real automation logic safely.

What You'll Learn

• Wiring a PIR motion sensor and a reed switch to Arduino Uno
• Programming conditional logic for combined sensor inputs
• Using LEDs as clear status indicators in a practical automation prototype
• How energy-saver circuits decide to keep lights on or off based on occupancy

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for young makers aged 5 to 15, this kit is perfect for students in ATL Tinkering Labs, CBSE and ICSE school projects on energy conservation, and parent–child weekend activities. No prior electronics knowledge is needed — the clear instructions and AI companion make it an accessible first step into automation and smart living.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.